I want to get a spare battery for my Fujifilm FinePix X100. It takes the Fuji NP-95 rechargeable battery. These are very hard to find; aftermarket brands are much more common. I'm hesitant to put an off-brand battery in a $1000 camera, though.

Does anyone (a) have a recommendation for a brand that they have personally tested with an X100, (b) know of a brand/store that guarantees no damage to the camera, or (c) know of a source of genuine Fuji batteries?